English
Related papers

Related papers: Two Radio Supernova Remnants Discovered in the Out…

200 papers

We report here on the first detection at X-ray wavelengths of the Supernova Remnant (SNR) G337.8-0.1, carried out with the XMM-Newton Observatory. Using the X-ray observations, we studied the X-ray morphology of the remnant at different…

Astrophysics · Physics 2009-11-13 J. A. Combi , J. F. Albacete-Colombo , J. Marti

We estimate the number of old, radiative supernova remnants (SNRs) detectable in HI 21-cm emission line in the Galaxy. According to our result, the contamination due to the Galactic background HI emission limits the number of visible SNRs…

Astrophysics · Physics 2009-11-10 Bon-Chul Koo , Ji-hyun Kang

Pinpointing a pulsar in its parent supernova remnant (SNR) or resulting pulsar wind nebula (PWN) is key for understanding its formation history, and the pulsar wind mechanism. Yet, only about half the SNRs and PWNe appear associated with a…

High Energy Astrophysical Phenomena · Physics 2019-03-13 Samayra Straal , Joeri van Leeuwen

We present Data Release 2 of the Point Source Catalogue created from a series of previously constructed radio-continuum images of M31 at lambda=20 cm (nu=1.4 GHz) from archived VLA observations. In total, we identify a collection of 916…

Astrophysics of Galaxies · Physics 2015-06-22 T. J. Galvin , M. D. Filipovic

We present three dimensional (3D) dust mapping of 12 supernova remnants (SNRs) in the Galactic anti-center (Galactic longitude $l$ between 150\degr\ and 210\degr) based on a recent 3D interstellar extinction map. The dust distribution of…

Astrophysics of Galaxies · Physics 2019-07-31 Bin Yu , B. Q. Chen , B. W. Jiang , A. Zijlstra

Recent studies using 21 cm HI line and $^{13}$CO line observations in the inner part of the Galaxy have resulted in new distances for 30 Galactic supernova remnants (SNRs). 15 of those remnants have observed X-ray spectra, for which…

Astrophysics of Galaxies · Physics 2018-10-17 D. A. Leahy , S. Ranasinghe

As the remnant of Supernova (SN) 1987A has been getting brighter over time, new observations at high frequencies have allowed imaging of the radio emission at unprecedented detail. We present a new radio image at 44 GHz of the supernova…

High Energy Astrophysical Phenomena · Physics 2015-06-17 G. Zanardo , L. Staveley-Smith , C. -Y. Ng , B. M. Gaensler , T. M. Potter , R. N. Manchester , A. K. Tzioumis

Aims: We study the supernova remnant G20.0-0.2 and its surroundings in order to look for the high energy counterpart of the radio nebula and to find evidence of interaction between the shock front and the interstellar medium. Methods: We…

Astrophysics of Galaxies · Physics 2015-06-15 Alberto Petriella , Sergio Paron , Elsa Giacani

The supernova remnant G15.4+0.1 is considered to be the possible counterpart of the gamma-ray source HESSJ1818-154. With the goal of getting a complete view of this remnant and understanding the nature of the gamma-ray flux, we conducted a…

High Energy Astrophysical Phenomena · Physics 2015-04-15 L. Supan , G. Castelletti , B. C. Joshi , M. P. Surnis , D. Supanitsky

Studying the interaction between core-collapse supernova remnants (SNRs) and their surrounding environments is essential to understanding the mechanism for energy transfer to the interstellar medium (ISM) and the intrinsic physical…

Supernova remnants (SNRs) are likely sources of hadronic particle acceleration within our galaxy, contributing to the galactic cosmic ray flux. Next-generation instruments, such as the Southern Wide-field Gamma-ray Observatory (SWGO), will…

High Energy Astrophysical Phenomena · Physics 2025-06-24 Nick Scharrer , Samuel T. Spencer , Vikas Joshi , Alison M. W. Mitchell

Supernova remnant (SNR) candidates in the giant spiral galaxy M101 have been previously identified from ground-based H-alpha and [SII] images. We have used archival Hubble Space Telescope (HST) H-alpha and broad-band images as well as…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 N. A. Franchetti , R. A. Gruendl , Y. -H. Chu , B. C. Dunne , T. G. Pannuti , K. D. Kuntz , C. -H. R. Chen , C. K. Grimes , T. M. Aldridge

G279.0+1.1 is a supernova remnant (SNR) with poorly known parameters, first detected as a dim radio source and classified as an evolved system. An analysis of data from the Fermi-LAT revealing for the first time an extended source of gamma…

High Energy Astrophysical Phenomena · Physics 2020-02-05 Miguel Araya

We present new radio continuum images and a source catalogue from the MeerKAT survey in the direction of the Small Magellanic Cloud (SMC). The observations, at a central frequency of 1.3 GHz across a bandwidth of 0.8 GHz, encompass a field…

The candidate supernova remnant (SNR) G118.4+37.0 (Calvera's SNR), discovered as a faint radio ring at high Galactic latitude and coincident with extended Fermi/LAT gamma-ray emission, is likely associated to the X-ray pulsar 1RXS…

High Energy Astrophysical Phenomena · Physics 2025-09-03 Emanuele Greco , Michela Rigoselli , Sandro Mereghetti , Fabrizio Bocchino , Marco Miceli , Vincenzo Sapienza , Salvatore Orlando

The discovery of the youngest Galactic supernova remnant (SNR) G1.9+0.3 has allowed a look at a stage of SNR evolution never before observed. We analyze the 50 ks Chandra observation with particular regard to spectral variations. The very…

Astrophysics of Galaxies · Physics 2009-11-13 S. P. Reynolds , K. J. Borkowski , D. A. Green , U. Hwang , I. Harrus , R. Petre

We present new observational results obtained for the Galactic non-thermal radio source G328.4+0.2 to determine both if this source is a pulsar wind nebula or supernova remnant, and in either case, the physical properties of this source.…

We present the first optical study of the supernova remnant (SNR) G7.7-3.7, with the aim of determining its evolutionary phase since it has been suggested to be the remnant of SN 386 AD. We obtained narrow-band images in the filters…

Astrophysics of Galaxies · Physics 2023-09-06 V. Domček , J. V. Hernández Santisteban , A. Chiotellis , P. Boumis , J. Vink , S. Akras , D. Souropanis , P. Zhou , A. de Burgos

Optical CCD imaging and spectroscopic observations of three supernova remnants are presented. Optical emission from G 54.4-0.3 and G 59.8+1.2 is detected for the first time, while the first flux calibrated CCD images of the supernova…

Astrophysics · Physics 2009-11-11 P. Boumis , F. Mavromatakis , E. M. Xilouris , J. Alikakos , M. P. Redman , C. D. Goudis

The supernova remnant (SNR), Ho 12, in the center of the dwarf irregular galaxy NGC 6822 was previously observed at X-ray, optical, and radio wavelengths. By using archival Chandra and ground-based optical data, we found that the SNR is…

Astrophysics · Physics 2009-11-10 A. K. H. Kong , L. O. Sjouwerman , B. F. Williams
‹ Prev 1 8 9 10 Next ›